Friction transmission mechanism.



W. G. BUCK.

FRICTION TRANSMISSION MECHANISM.

APPLICATION FILED SEPT 5| 19I4.

Patented Jan. 11, 1916.

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Wiffieaaea W. G. BUCK.

FRICTION TRANSMISSION MECHANISM.

APPLICATION FILED SEPT- 5. I914- 1 1 57 Patented 112111.11, 1916.

3 SHEETS-SHEE T 2.

W. G. BUCK.

FRICUON TRANSMISSION MECHANISM. APPLICATION FILED SEPT- 5, 18M. 1 168Q57, Patented Jan. 11, 1916.

3 SHEETS-SHEET 3.

COLUMBIA PLANOGRAPH CD.,WASHINGTON. D. z:v

WILMER G. BUCK, OF WARREN, OHIO.

FRICTION TRANSMISSIONQMECHANISM.

Specification of Letters Patent.

Patented Jan. 11, 1916,

Application filed September 5, 19 14. SeriaI No. 860,363

To all whom it may concern:

Be it known that I, VVILMER G. BUCK, a citizen of the United States,residing at lVarren, in the county of Trumbull and State of Ohio, haveinvented certain new and useful Improvements in Friction TransmissionMechanisms, of which the following is a specification.

The present invention relates to a friction transmission mechanism fortransmitting power from a driving to a driven shaft.

The objects of the invention are; to provide means whereby a directdrive can be effected from the driving to the driven shafts; to providemeans for securing a differential drive of the driven shaft; to providemeans for securing a reverse drive of the driven shaft; and to providean auxiliary mechanism for transmitting movement from the frictiontransmission to the driven shaft and for establishing a direct drivebetween the driving and driven shafts.

A further object of the invention is to provide lever mechanisms foroperating the various portions of the transmission mechanism which willbe conveniently and cen-' trally located.

The invention further consists in the features of constructionand'combinations of parts hereinafter described and claimed.

In the drawings: Figure 1 is a sectional view of the device of thepresent invention; Fig. 2 is a section on line 2-2 of Fig. 1 looking inthe direction of the arrow; Fig. 3 is i an end view of the auxiliaryclutch device;

and Fig. 4 is a detail showing the link connection for actuating certainportions of the transmission mechanism.

In motor devices it is essential to a practical transmission that adirect driving be established when desired. The primary object of theinvention is to eifect this direct drive, although, of course, inventionand novelty are claimed for other portlons' by the numeral 12. Locatedwithin this a; housing a ring 13, and, at various intervals there ismounted in this ring radially extending stems 14, which may be of anydesired number. As shown in Fig. 1, these stems are mounted to revolveaxially within said ring. Pivoted to this ring 13, as at 15,

Fig. 2, are a series of arms 16, which, as

from this forked end is a roller 18, Figs- 1 and 2, which travels in acurvilinear slot 1 formed in a webbed ring 20. a 1 Extending from thewebbed ring 20 is a collar or sleeve 21 to which is-attached a handle22. The forked ends 17 of the arms 16 each engage witha groove 23 in ahubor some other suitable'composition. These hubs 24. are arranged toslide ,up and down upon the stems 14 and have a spline oonnection withsaid stem, so that although they are capable of sliding longitudinallythereof, they are rotated in unison. Attached to the lower end of eachof the stems 1 1 is a beveled pinion 26 meshing with a beveled gear 27which is keyed or otherwise secured to a sleeve 28 surrounding the driveshaft 8.

The sleeve 28 is keyed at its outer end to a cup-shaped member 29, sothat this member is rotated simultaneously with said sleeve.

Vithin' this cup-shaped member is arranged companion semi -circular arms30, best shown, perhaps, in Fig. 3. These arms are pivoted together asat 31 and between the free ends of said arms extends the end of a pin32, Figs. 1 and 3, which end 33, as shown in Fig. 3, is maderectangular. This end, as stated, is arranged to lie between the freeends of the arms 30, and it is obvious that as the pin 32 is turned, theeffect of turning the rectangular end thereof, will be to spread thearms 31 apart effecting a friction connection between these arms and theinner wall'of the cup-shaped member 29. The pin 32 is mountedin a plate34E,and this plate in turn is formed with a sleeve 35 which is keyed tothe driven shaft 36 so that through this connection a movement isimparted from the driving sleeve 28 J to the driven shaft 36. v 7

When thedevice is being used to transmit any speed forward other than adirect drive and also during the transmission of a reverse drivetheconnection is from the friction devices in. the-casing ll throughthe-sleeve 28,

to the cup-shaped member 29, through the plate 34 and sleeve 35, to theshaft 36. W'lth the parts in the position shown in Fig. 1, the

friction devices within the casing 11 are in neutral position. The meansfor moving said devices into operative position consists of a sleeve 37to which is attached arms 38 and 39 in turn connected to a lever member40 having a handle 41. By actuating the handle 41 the sleeve 37 is movedin and out which in turn moves all of the friction devices within thecasing 11. This will be clearly understood by referring to Fig. 1, whereit is seen that the sleeve 37 terminates in a housing or casin 42,through which the stems 14 project, and the moving of the sleeve 37 andthe housing 42 will obviously carry the stems and the rest of thefriction devices toward the inner wall 43 or the inner wall 44 of thecasing 11. The gear 27, of course, is moved at the same time so that theconnection between the pinions 26 and gear 27 is at all timesmaintained.

Now assuming the sleeve 37 is moved to bring the transmission devicesinto position where the leather rings 35 will engage the inner wall 43ofthe casing 11, this will rotate the said rings in a clock-wisedirection and by reason of their connections with the stems 14 saidstems will be rotated in a similar direction. The pinions 26 will thusbe rotated, rotating the gears 27 and the sleeve 28, which latter inturn will rotate the cuplike member 29 and through the medium of thearms 30 and the plate 34, the shaft 36 will. be rotated. The arms 38 and39 are employed so that a dead center and lock will be established forthe lever 41.

As is well known in friction transmission mechanisms, the fartherthefriction devices are placed from the center of rotation of the driveshaft the faster will be the speed trans mitted to the driven shaft. inthe present invention this is accomplished by manipulation of the lever22. As said lever is manipulated it will turn the webbed ring 20,whereby the rollers 18 will be forced upward in the slot 19, swingingthe arms 16 about their pivotal center, carrying the forked end thereofupward, sliding the hubs 24 and friction rings 25 upward on the stems 14and bring; ing the said rings farther away from the center of rotationof the shaft 8 whereby they are revolved a greater number of times by asingle revolution of the member 11, or in other words, a singlerevolution of the drive shaft, and hence a greater speed imparted to theshaft 36. By this means any desired speed of rotation of which themechanism is capable can be transmitted from the driving to the drivenshaft. When it is desired to reverse the drive the lever 41 is thrownover and by reason of its connection with the sleeve said sleeve will beslid,

et eiee' tie at the tastier against the wall 44 of the casing 11 andthus reversing the direction of movement of the hubs 24, the stems 14,pinions 26, gear 27, sleeve 28, member 29, plate 34 and driven shaft 36.

The foregoing, it is believed, clearly eX- plains the manner in which areverse drive, or any forward drive, save a direct, is transmitted fromthe drive shaft to the driven shaft. When it is desirable to make adirect drive from the driving to the driven shaft the friction gearingis placed in neutral position which is the positionshown in Fig. 1, sothat there is no movement transmitted through this device to the drivenshaft. A sliding collar 45 is mounted to slide on the shaft 36, as shownin Fig. 1. This collar may be actuated by any suitable sort of levermechanism and carries a plurality of pins 46 having their ends lOBVQlQC,on one side as at 47. These pins slide through the plate 34 and engagewith pins 48 having their ends 49 beveled at one side, the pins 48 aremounted in a collar 50 keyed to the shaft 8. When thecollar 45 is pushedinward the pins 46 and 48 will come into a looking or clutch engagementand since the collar 50 is being revolved by the shaft 3 there willobviously be a rotating movement imparted to the plate 34 and since thesleeve 3-5 of this plate is keyed to the shaft 36 a direct drivingmovement will be imparted from the shaft 8 to the shaft 36. During thisdirect drive no movement should be imparted to the cup-shaped member 29,and to explain how this is accomplished it is nee essary to refer backagain to the pivoted arms 30, which effect the connection between thecup-shaped member 29 and the plate 34, it will be remembered thatconnection between these parts is made by springing out the arms 30 byturning the head 33 on the stem 32. This stem and head are turnedthrough the medium of an arm 51 extending from the stem and restingagainst the sliding collar 45. This collar is provided with a beveledsurface 52 and when the sleeve 45 is pulled outward the end 53 (see Fig.3) of the arm 41 will ride up on this beveled surface swinging this armoutward from the center of the shaft 35, turning the stem 32 and thehead 33 spreading the arms 30 apart and thus effecting the connectionbetween the cup-shaped member 29 and the plate 34, but when the sleeve45 is forced inward to effect the direct drive connection the arm 51passes off from the beveled surface 52 moving the stem 32 and head 33into position where the arms '30 are collapsed, and the connectionbroken between the cup-shaped member 29 and the plate 34. Therefore bymeans of this auxiliary clutch mechanism it is possible to establish adirect drive from the driving tothe driven shafts ina simple nd seen lea-e612, audvith .1 9 nte f re ce.

V shaft.

The mechanism is compact and simple and 1s easy of operation, it beingnecessary to supply only three levers foractuating the entire device.

Although it is preferable to throw the friction devices into neutralbefore makingthe directdrive connection, this is not essential sincewhen the arms 30 are collapsed no movement will be imparted from thefriction devices to the shaft 36 and the direct drive will not beinterfered with.

I claim:

1. In a device of the class described, the combination of a drivingshaft and a driven shaft, friction devices interposed between thedriving and driven shafts, a connection between the friction devices anddriven shaft comprising a hollow member connected to said frictiondevices and a member connected to the driven shaft, means forestablishing a connection between said hollow member and the memberconnected to the driven shaft, a member connected to the driving shaft,and means for breaking the connection between the hollow member and themember connected to the driven shaft and for establishing connectionbetween the member connected to the driving shaft and the memberconnected to the driven shaft whereby a direct drive is eflected,substantially as described.

2. In a device of the class described, the combination of a drivingshaft and a driven shaft, friction devices interposed between thedriving and driven shafts, a hollow member actuated by said frictiondevices, a member connected to the driven shaft, friction means forestablishing a connection between the hollow member and the memberconnected to the driven shaft, a member connected to the driving shaft,and means for breaking the friction connection between the hollow memberand the member connected to the driven shaft and for establishingconnection between the member connected to the driving shaft and themember connected to the driven shaft whereby a direct drive is effected,substantially as described.

3. In a device of the class described, the combination of a drivingshaft and a driven shaft, friction devices actuated by the drivingshaft, a connection between the friction devices and driven shaftcomprising a hol low member, pivoted arms within the hollow member, amember connected to the driven shaft, a connection between said arms andsaid member connected to the driven shaft, means for spreading andcollapsing said arms to make and break a connection ,be-

tween the hollow member and member conmeted tattl d l. @f -b mem er; 93m.

nected tothe driving shaft, and means for effecting a connection betweenthe member connected to the driving shaft and the member connected tothe driven shaft whereby a direct drive isefiected, substantially asdescribed.

4. In a device of the class described, the combination of a drivingshaft and a driven shaft, friction devices interposed between saiddriving and driven shafts, means fortransmitting movement from saidfriction devices to the driven shaft comprising a hollow member, anexpansible part within said hollow member, means for expanding andcontracting said expansible part,. a member connected to the drivenshaft, a connection between said expansible part and said member, amember connected to the driving shaft, and means for effecting a connection between the member connected to the driving shaft and the memberconnected to the driven shaft whereby a direct drive is effected,substantially as described.

5. In a device of the class described, the combination of a drivingshaft and a driven shaft, friction devices actuated by the driving shaftcomprising oppositely disposed plates, a series of rotatable frictionmembers lying between said plates and rotated by engagement with theinner wall of one of said plates, a sleeve, a connection between saidrotated members and said sleeve, a connection between said sleeve andthe driven shaft, and means for shifting said rotated member fromengagement with the wall of one plate to engage with the wall of theother plate whereby the direction of rota tion is reversed,substantially as described. 6. In a. device of the class described, thecombination of a driving shaft and adriven shaft, friction devicesactuated by the driving shaft comprising oppositely disposed plates, aseries of rotatable friction members lying between said plates androtated by engagement with the inner wall of one of said plates, asleeve, a connection between said'rotated members and said sleeve, acon-.-

nection between said sleeve and driven shaft,

means for moving said rotated members in and out from the center of thedriving shaft to vary the speed transmitted to the'driven shaft, andmeans for shifting said rotated members from engagement with one of saidplates and into engagement with the other of said plates whereby thedirection of rotation is reversed, substantially as described.

7. In a device of the class described, the combination of a driveshaftand a driven shaft, friction devices actuated by the drive ee arreasaware betw n the v stems and sleeve, and means for shifting said disksfrom engagement with one inner wall of the easing into engagement withthe opposite inner wall'to reverse the direction of rotation of saiddisks, substantially as described.

8. In a device of the class described, the combination of a drivingshaft and a driven shaft, friction devices actuated by the driving shaftincluding a casing, a series of ro tatable stems radially extendingwithin said casing, a friction disk on each stem actuated by engagementwith an inner wall of the casing, a sleeve, a connection between thesleeve and driven shaft, a connection be tween the stems and sleeve,means for sliding said friction disks longitudinally of said stems tomove them in and out from the center of the casing and vary the speed ofrotation of said disks, and means for shifting said disks fromengagement with one inner wall of the easing into engagement with theopposite inner wall to reverse the direction of rotation of said disks,substantially as described.

9. In a device of the class described, the combination of a drivingshaft and'a driven shaft, friction devices actuated by the driving shaftcomprising oppositely disposed plates, a series of rotatable frictionmembers within the casing and rotated by engagement with the inner faceofone of said plates, sleeve, a connection between said rotated membersand sleeve, a connection between said sleeve and the driven shaft, andmeans for disconnecting the connection between said sleeve and drivenshaft and effect- 7 inga direct connection between the driving drivenshaft, a connection between the stems and sleeve, and means fordisconnecting the connection between said sleeve and driven shaft andeffecting a direct connection between the driving and driven shafts, substantially described.

11. In a device of the class described, the combination of a drivingshaft and a driven shaft, friction devices for ransn'iitting power fromthe driving to the driven shafts comprising a casing rotated by thedrive shaft, a ring within said casing, a series of stems mounted torevolve in said ring and radially extending from the drive shaft, arotatable f iction disk keyed to each stem and" rotated byengageinentwith an inner wall of the casing; sleeve 'e-Xteinilin-g atrightangles to said stems, a driving connection between said stems andsleeve, and a connection between the driven shaft and sleeve,substantially as described.

12. In a device of the class described, the combination of a drivingshaft and a driven shaft, friction devices for transmitting power fromthe driving to driven shafts comprising a casing rotated by the drivingshaft, a ring within said casing, a series of stems mounted to revolvein said ring and radially extending from the driving shaft, a rotatablefriction disk splined to each stem and rotated by engagement with an inner wall of the casing, a sleeve extending at right angles to saidstems, a driving connec tion. between said stems and sleeve, aconnection between the driven shaft and sleeve, and means for breakingthe connection between said :3 eeve and driven shaft and establishing adirect connection between said driving and driven shafts, substantiallyas described.

a rotatable friction disk splined to each stem and rotated by engagementwith an inner wall of the casing, a sleeve extending at right angles tosaid stems, a driving connection between said stems and sleeve, aconnection between the driven shaft and sleeve, and means for shiftingsaid ring, stems and friction disks together with the connection betweensaid sleeve'and stems to bring the friction disks out of engagement withone wall of the casing and into engagement with an opposite wall toreverse the'direction of drive, substantially as described.

1%. In a device of the class described, the combination of a drivingshaft and a driven shaft, a casing connected to the driving shaft, aseries of rotatable stems within said casing, a rotatable friction disksplined to each stem and rotated by engagement with an inner wall of thecasing, a sleeve extending at right angles to said stems, a drivingconnection between said stems and'sleeve, a connection between thedriven shaft and sleeve, a webbed plate within the casing, a

connection between said webbed plate and 1 airinnerwall ofthe-casing;aj'sleeveeXtend ing at right angles to said stems, a drivingf'comprising a pivoted arm connected to each connection between saidstems and sleeve, a]

connection between the driven shaft and sleeve, a webbed plate withinthe casing, a connection between said webbed plate and friction diskswhereby said plate when shifted forces the disks longitudinally of saidstem, and means for breaking the connection between said sleeve anddriven shaft and for establishing a direct connection between saiddriving and driven shafts, substantially as described.

16. In a device of the class described, the combination of a drivingshaft and a driven shaft, a casing connected to the driving shaft, aseries of rotatable stems within said casing, a rotatable frictlon disksplined to each stem and rotated by engagement with an inner wall of thecasing, a sleeve extending at right angles to said stems, a drivingconnection between said stems and sleeve, a connection between thedriving shaft and sleeve, a webbed plate within the casing, a connectionbetween said webbed plate and friction disks whereby said plate whenshifted forces the disks longitudinally of said stems, and means forreversing the direction of rotation of said friction disks,substantially as described.

17. In a device of the class described, the combination of a drivingshaft and a driven shaft, a casing connected to the driving shaft, aseries of rotatable stems within the casing, a rotatable friction disksplined to each stem, and rotated by engagement with an inner wall ofthe casing, means for sliding said disks longitudinally of said stemscomprising a pivoted arm connected to each of said disks, a shiftableplate having a series of cam slots therein, a member extending from eachof said arms one member lying within each of said slots, a sleeveextending at right angles to said stems, a driving connection betweensaid stems and sleeve, and a connection between said sleeve and drivenshaft, substantially as described.

18. In a device of the class described, the combination of a drivingshaft and a driven shaft, a casing connected to the driving shaft, aseries of rotatable stems within the casing, a'rotatable friction disksplined to each stem and rotated by engagement with an inner wall of thecasing, means for sliding said disks longitudinally of said stems 'ofsaid disks, a shiftable plate having a series of cam slots therein, amember extending from each of said arms one member lying within each ofvsaid slots, a sleeve extending at right angles to said stems, a drivingconnection between said stems and sleeve, a connection between saidsleeve and driven shaft, and means for breaking the connection betweensaid sleeve and driven shaft and effecting a direct connection be tweensaid driving and driven shafts, substantially as described. a

- 19. I11 a device of the class described, the combination of a drivingshaft and a driven shaft, a casing connected to the driving shaft, aseries of rotatable stems Within the casing, a rotatable friction disksplined to each stem, and rotated by engagement with an inner wall ofthe casing, means for sliding said disks longitudinally of said stemscomprising a pivoted arm connected to said disks, a shiftable platehaving a series of cam slots therein, a member connected to each of saidarms one member lying within each of said slots, a sleeve extending atright angles to said stems a driving connection between said stems andsleeve, a connection between said sleeve and driven shaft, and means foreffecting a reverse movement of the friction disks, substantially asdescribed.

:20. In a device of the class described, the combination of a drivingshaft and a driven shaft, a casing secured to the driving shaft,rotatable friction members within said casing rotated by engagement withan inner wall of the casing, a connection between said friction membersand the driven shaft, a

slidable sleeve, a connection between said friction members and saidsleeve whereby when said sleeve is slid said frlction members arebrought out of engagement with one 7 Copies of this patent may beobtained for five cents each, by addressing the Commissioner of Patents,Washington, D. G.

